You can use os module's rename method. For example, you want to rename a file from a.txt to b.txt with these files present in your current directory,
>>> import os
>>> os.rename('a.txt', 'b.txt')You can also use the shutil (or shell utilities) module. Calling shutil.move(source, destination) will move the file or folder at the path source to the path destination and will return a string of the absolute path of the new location.
For example
>>> import shutil
>>> shutil.move('a.txt', 'b.txt')If you have the files in different directories, then specify the absolute path for both methods.